My Brother printer has a 'Communication Error'. What networking checks should I perform?

A 'Communication Error' points to a problem with the printer's connection to your computer or network. For Wi-Fi printers, ensure the printer is connected to the correct Wi-Fi network and that the signal strength is adequate. Check your router to see if it's broadcasting properly and try restarting it. Temporarily disable any firewalls on your computer or router that might be blocking communication. You can also try assigning a static IP address to the printer or running Brother's Network Connection Repair Tool (if available for your model) from their support website.